The operation took 22 hours and 30 doctors, but the world's first full facial transplant has been deemed "a success."

In a clandestine operation that took place almost a month ago in Barcelona, a man who'd lost his much of his face in a shooting accident received an entire face—skin and muscles, and as the BBC clarified, even "cheekbones, nose, lips and teeth"—from a donor.

Apparently the patient, who'd formerly been unable to swallow or breathe, has since seen himself in a mirror and was "calm and satisfied." It's unclear just how much function he's regained, and just like for any organ transplant, he'll be on anti-rejection drugs for the rest of his life.